Claude Mythos 5.1vsCodestral 25.01
Claude Mythos 5.1 | Codestral 25.01 | |
|---|---|---|
| Specifications | ||
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 1M | 256k |
| BenchmarksPublished by one model only | ||
Terminal-Bench 4.0Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Version 4.0 recalibrated how much time, CPU and memory each task gets, removed eight tasks and fixed nineteen, so fewer runs fail for reasons that have nothing to do with the model. Scores are not comparable with earlier versions. Higher is better. | 60.9% | — |
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Sep 1 2026 | Jan 13 2025 |
| Access | Proprietary | Proprietary |
Other comparisons
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Frequently asked questions
Claude Mythos 5.1 and Codestral 25.01 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral 25.01 shipped 596 days before Claude Mythos 5.1, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Claude Mythos 5.1) vs 256k (Codestral 25.01).
Direct benchmark comparisons are unavailable — Claude Mythos 5.1 and Codestral 25.01 don't publish scores on any of the same benchmarks.
Claude Mythos 5.1 was released by Anthropic on Sep 1 2026.
Codestral 25.01 was released by Mistral on Jan 13 2025.
Claude Mythos 5.1 has a 1M context window; Codestral 25.01 has 256k.